Damage. also in september, hurricane ian, the most intense storm of the season, was also the most expensive, raining down an eye-watering $113 billion in damage along with its 115-mile-per-hour winds. the cost of ian's destruction rivals some of the biggest storms in recent memory, including hurricane katrina. it was also florida's deadliest storm in nearly a century. these were only the events in the united states. last year's flooding in pakistan caused more than $30 billion in damage and economic losses, according to the world bank. and while europe's summer heatwave had a big human toll, w...